Siemens 6ED1050-1AA00-0BE8 manual Threshold trigger, Parameter GT

LOGO! functions

4.4 Special functions list - SF

4.4.17Threshold trigger

Short description

The output is set and reset with two configurable threshold triggers.

Symbol in LOGO!		Wiring	Description
		Input Fre	The function counts the 0 to 1 transitions at input Fre.
)UH			1 to 0 transitions are not counted.
	4		Use
3DU
			• inputs I3, I4, I5, I6 for fast counting (only LOGO!
			12/24RC/RCo, LOGO! 12/24RCE, LOGO! 24/24o
			and LOGO! 24C/24Co): max. 5 kHz, if the fast
			input is directly connected to the threshold trigger
			function block
			• any other input or circuit component for counting
			low frequency signals (typ. 4 Hz).
		Parameter	On: On threshold
			Range of values:
			0000...9999
			Off: Off threshold
			Range of values:
			0000...9999
			G_T: Time interval or gate time during which the input
			pulses are measured.
			Range of values:
			00:00 s...99:99 s
		Output Q	Q is set and reset at the thresholds.

Parameter G_T

The gate time G_T can be provided by the actual value of another already-programmed function. You can use the actual values of the following functions:

●Analog comparator (Page 218) (actual value Ax – Ay)

●Analog threshold trigger (Page 213) (actual value Ax)

●Analog amplifier (Page 226) (actual value Ax)

●Analog multiplexer (Page 248) (actual value AQ)

●Analog ramp (Page 251) (actual value AQ)

●Mathematic instruction (Page 265) (actual value AQ)

●PI controller (Page 256) (actual value AQ)

●Up/down counter (Page 201) (actual value Cnt)

	LOGO!
210	Manual, 04/2011, A5E03556174-01